ADR420ARM-REEL7

Overview

The ADR420ARM-REEL7 is a second-generation eXtra implanted junction FET (XFET) voltage reference providing a fixed 2.048 V output. It features low noise of 1.75 μV p-p from 0.1 Hz to 10 Hz and an initial accuracy of ±0.15%. The device operates over an extended industrial temperature range of −40°C to +125°C with a maximum quiescent current of 0.5 mA. It delivers up to 10 mA of load current within an input voltage range of 4 V to 18 V. Packaged in an 8-lead MSOP, it includes a trim terminal for ±0.5% output adjustment.

Feature Summary

• Utilizes patented XFET technology to minimize nonlinearity and provide superior thermal hysteresis compared to band gap references.
• Offers excellent long-term stability of 50 ppm per 1000 hours at 125°C.
• Includes a dedicated trim terminal allowing precise output voltage adjustment without compromising other performance metrics.

Applications

• Precision data acquisition systems
• High resolution converters
• Battery-powered instrumentation
• Portable medical instruments
• Optical network control circuits

Procurement Notes

Verify the specific package variant against the datasheet ordering guide, as the suffix indicates surface mount packaging. Confirm that the required electrical grade meets the application's precision needs. Ensure supply voltage headroom remains above 2 V under all operating conditions. Check component authenticity through authorized channels to guarantee specified long-term stability and noise characteristics.

Selection Notes

Select this component when ultra-low noise and high precision are critical for analog signal chains. Consider the 8-lead MSOP footprint for space-constrained designs requiring smaller dimensions than standard SOIC packages. Evaluate the need for external trimming if system-level calibration is necessary to compensate for residual errors.

Part Context

This part belongs to the ADR42x series of ultraprecision voltage references manufactured by Analog Devices Inc. The series utilizes advanced semiconductor fabrication techniques to achieve exceptional stability and low noise profiles suitable for demanding measurement applications.

FAQ

Can the output voltage be adjusted?

Yes, the TRIM pin allows adjustment of the output voltage over a ±0.5% range without affecting the temperature coefficient.

Is an output capacitor required for stability?

No, the ADR42x does not require an output capacitor for stability under any load condition, though one may be used for noise filtering.